Alarm-clock



(Model.)

` A. B. HAWLEY.

ALARM CLOCK.

WITNESSES M IJVVENTOR @KW7 YJ, 7AM@ @i f W66 .Attorney UNITED STATES PATENT OFFICE.

ALONZO B. IIAVLEY, OF DETROIT, MICHIGAN.

ALARM-CLOCK.

SPECIFICATION forming part of Letters Patent No. 360,346, dated March 29, 1887.

Application filed January 23, 1886. Serial No. 189,512. (Model.)

.T0 all whom, it 1v1/ay concern:

Be it known that I, ALONZO B. HMVLEY, of Detroit, county of Vayne, State of Michigan, have invented a new and useful Improvement in Alarm-Clocks; and I declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and useit, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to certain new and useful improvements in alarm-clocks, and has for its object more particularly novel mechanism for effecting a second alarm.

It often happens that by ordinary alarmclocks the sleeper is not sufficiently awakened to respond immediately thereto, and it is desirable that the alarm should go oiif a second time, after a suitable interval, to more effectually accomplish the purpose for which alarmclocks are used. My invention therefore contemplates a double alarm readily set to go off with any given interval of time desired between the two alarms, the alarm-hands by which the device is set being both preferably located about the same center.

My invention consists in the combinations of devices and appliances hereinafter specified, and more particularlypointed out in the claims.

In the drawings, Figurel is a rear elevation of clock mechanism embodying my invention, with a portion of the frame removed. Fig. 2 is a front elevation of the same, with the dial removed. Fig. 3 is a plan view showing the alarm portions of themechanism. Fig. isa separate view of one of the gears. Fig. 5 is also a separate view of still another gear. Fig. 6 is a view of the rear dial by which the alarm is set as desired, and Fig. 7 is a longitudinal section illustrating parts of my invention.

As shown in the accompanying drawings, A represents the fra-me inclosing the clock-work mechanism. A is the rim which supports the front dial.

B represents the wheel which rotates the hour-hand b of the front dial, and C is an alarm-wheel geared with the hour-hand wheel B, so that each'will revolve at the same rate of speed, in any ordinary manner.

-independent location.

b is the arbor of the minute-hand lfJ on the front dial.

c is theshaftof thealarm-wheel O, and upon which the hour and minute hands c" c2 of the alarm-dial O are centered, said alarm-dial being upon the rear of the inclosing-case, said alarm-dial being numbered, also, in reverse order to the front dial.

D is the escapement-wheel of the alarm mechanism; D', the escapement; F, the ordinary spring for holding the escapement D until the same is to be released for the sounding ofthe alarm.

F is the alarm-hammer. The alarm-wheel O is provided'with a cam-shaped face or disk, c3, as shown in Figs. 4 and 7, and hasasliding movement upon the arbor c, and c* is a pin engaged in said arbor, the cam-faced disk on the alarm-wheel C and the pin c of the arbor being so constructed and arranged relative to each other that when the alarm-wheel rotates said pin will ride upon its cam-shaped face, and finally off the outer edge, c, of the face and drop into the adjacent cam-notch c, permitting the spring E to move and release the escapement D of the alarm mechanism, and give thereby the tirstalarm, the wheel C being permitted to slide forward upon its shaft by the force ofsaid spring. The escapement being released by this means, the gear G of the barrel is permitted to rotate, communieating motion to the pinion g. The pinion g, being mounted on the shaft g', communicates motion to the gear G', whichy in turn meshes with the pinion g2 upon the shaft of the escapement-wheel in the usual manner. I locate, however, a segmental gear, H, upon the face of the gear G, which may be an integral portion of the same.

As the gear G rotates the segmental gear is also rotated in the direction of the arrow, Fig. I, while the alarm is sounded, and, when said segmentalgear has madehalfarevolution,gives half a revolution to the gear I. rIhe gear I is mounted upon a stationary arbor, i2, which may be located aboutthe shaft c, or may have an The said gear is provided with a stop,

I' is an adjacent spring, upturned at its end, as shown at t", or otherwise constructed to be engaged by the stop i of the gear I, as shown IOO ' and intermediate mechanism.

in Fig. o. VheiLsaid gear has made its [irst half-revolution, as above described, said latter gear, I, being midway of the ends or' the segmental gear H, the stoppage of the gear I consequently stops the segmental gear also, and thereby the gear G ofthe barrel, and causes the alarm to cease.

J is the pinion which moves both thc hourhand wheel B and the alarm-wheel C. Said pinion is located upon the face ofthe wheel J', which in turn meshes with the pinion j, frictionally mounted upon the sleeve K, to which the minute-hand cL of the alarm-dial is secured. As shown -in the drawings, the minutehand c? of the alarm is shorter than the hour-hand c'. The pinionj is constructed with a cam-shaped ii'aee, the sleeve K being provided with a pin, Zr, adapted to ride upon the caini'ace of the pinion]` until it rides oit1 the outer edge of said i'aee, permitting the notch 7c' of the cam-shaped pinion to ride about said pin, as it is at that instant sprungl'orward by means of the spring I, thereby releasingI said spring` from the gear I, permitting the said gear to rotate with its connected gear, and thus to sound the second alarm through the gears II G G', hammer F,

By this movement the segmental gear H rides out of mesh with the gear I and around into gear with the wheel L, provided with a stop, Z. When the segmental gear has made a second halfrevolir tion, it thereby gives a halirevolution to the wheel L, bringing its pin Zagainst the stop M, stopping the second alarm. The hour-hand c of the alarm-dial being mounted on the shaft c, and the minute-hand c1 of the alarm-dial being engaged with the sleeve K, located upon said shalt, it is evident that the said shaft and the said sleeve may be set as desired in relation to the cam-shaped surfaces ofthe alarm-wheel C and the pinionj, and thereby to cause the two alarms to ring at any given times desired.

Zhen it is desired to put the alarm mechanism into operation, said hands upon the alarm-dial are set at the hour and minute, respectively, at which the two separate alarms are desired to ring, and then the stop M, which preferably consists of a spring-arm, is disengaged from the pin-Z, which may be done by simply raising the spring until its upturned end shall rest upon said pin, permitting the wheel L to ride forward. It will be seen that the first half-revolution of the segmental gear H will bring the pin Z into'the position shown in dotted lines, this being its position until the second half-revolution ot' said segmental gear, when it is rotated and turned around against the stop M. By this mechanism the alarm may be made to ring at any desired time, and the` second alarm to ring at any desired interval thereafter.

The mechanism is simple and not likely to get out of order, while efficient in accomplishing the results desired.

To set the hands on the alarm-dial at any desired point, they are moved in the direction of the arrow, Fig. 6, until the hour and minute hands, respectively, point to the hour and minute at which it is desired to have the two alarms sounded, their positions on the alarmdial corresponding to the times ot the desired alarm on the front dial. Thus, if it is desired to have the first alarm at iive ocloek, the hour-hand c' is brought about to that point on the alarm-dial, as indicated in Fig. G. If it is desired to have a second alarm sounded at a quarter past rive, the minute-hand is brought about to said position, as iinlicatedin said iigure, their positions corresponding in reverse order-thus to and 5.15 on thc front dial.

I have described the pinion j as mounted upon the sleeve K, said sleeve being located upon the shalt c; but I would have it understood that I do not limit myself te this construction, as it is evident that, instead of K being a sleeve, it might be an independent shaft upon which the pinion j is mounted, and the clock-gear arranged to mesh with said pinion in any suitable manner, the shaft K being provided with a minute alarm-hand, ci. I prei'er the construction shown for the reason that the two alarm-hands thereby have the same center, and are therefore most conveniently moved about the alarm-dial C to set the mechanism 'for use; but the two alarm-hands need not necessarily have the same center. So, also. I have described and shown a stopwheel, L, to limit the second alarm; but the stop might be located upon the wheel G, and the stoparm DI be arranged to engage therewith as said wheel rotates; but I prefer the additional stop-wheel L, meshing with the segmental gear H, for the reason that the size of said stopwheel L may be varied inits relation to the segmental gear H, so as to prolong the time for the sounding ofthe alarm.

The number of the teeth on the wheel L and the segmental gear may be varied so as to cause the alarm to sound longer or shorter, as may be desired, instead ol'l limiting the operation of the gear L at cach half-revolution of the segmental gear. rIhe number ol' the teeth upon the two eircumferences, respectively, may be so varied as to give the segmental gear any number of rotations or fractions thereoi1 desired. rllhus, il the gearLhad, we will say, eighteen teeth upon its periphery and the segmental gear was limited to six teeth, the segmental gea-r would have one and a half revolutions before it had brought the pin Z into the position shown in dotted lines, and the pin z' of the gear I will be brought against the spring I, completing the first alarm, and when the pinion j permits the releasing of the spring I, then the gear G will be permitted to malte another circuit and a halt' and bring the stop Z into position against the arm M, completing the second alarm.

N represents a spring located upon the arbor K, to bind the minute alarnrhand in its adjustment upon the dial C. This spring may be located either between the gearI and frame A, as shown in Fig. 3, or between the frame A and a bracket, a, secured to the outer side IOO IIO

thereof, as shown in Fig. 7. A similar spring may be located upon the shaft c to hold the alarm hour-hand, so that it will be sure to remain in a given position.

What Iclaim as new, and desire to protect by Letters Patent, is-

1. In an alarm-clock, the combination, with an alarm mechanism, of an arbor provided with a stop, a sliding cam-face pinion rotatable about said arbor, aspring bearing against said pinion, and two tripping mechanisms connected with the alarm-escapement, the construction beingsuchthatthetwo alarm mechanisms may be adjusted to give successive alarms at any desired interval, substantially as dei scribed. f

2. The combination, with the alarinwheel C and the shaft c, of the sleeve K, the sliding pinion mounted on said arbor, and springs bearing against said alarm-wheel and pinion, said shaft being provided with an hour alarmhand and said sleeve with the minute-hand, both said hands being centered about said shaft, substantially as and for the purposes described.

3. The combination, with the shaft of the alarin-wheelC, of a sleeve, K, provided with a pin, 7c, and a cam-faced pinion mounted upon said sleeve and adjacent to the pink, said shaft being provided with an hour Aalarm-hand and said sleeve with a minute Aalarm-hand, substantiall y as and for the purposes described.

4. Thecombination, with a shaft provided with a pin, c4, of an alarmwheel mounted thereon, provided with a cam-face adjacent to said pin, a spring, E, to govern the escapement, bearing against said alarm-wheel, a sleeve, K, located upon said shaft, provided with a pin, 7c, a cam-face pinion located upon said sleeve adjacent to said pin, a gear, I,

mounted on said sleeve and prbvided with a stop, fi, and a spring, l, adapted to govern the gear I and bearing against said pinion, all constructed and arranged substantially as and for the purpose described.

5. The combination, with the gear I, provided with a stop, of a spring, I', to control the movement of said gear, and in combination therewith a gear-wheel meshing with said gear I, and stopping mechanism to limit the rotation of said gear-wheel, substantially as described.

The combination, with the gear I, provided with a stop, of a spring, I, to control the movement of said gear, and in combination therewith a wheel, G, provided with a segmental gear arranged to rotate the gear I, substantially as and for the purposes described.

7. The combination, with the gear L, provided with a stop, of an arm, M, to limit the rotation of said gear, and asegmental gear,H, to rotate the gear L, substantially as and for the purpose described.

8. The combination, in an alarm-clock, of a wheel, G, provided with a segmental gear, H, having in combination therewith the gears I and L, each provided with astop, substantially as described.

9. The combination, with the shaft c and sleeve K mounted thereon, of a dial, G', numbered in reverse order to the front dial, said shaft provided with an hour alarm-hand and said sleeve with a minute alarm-hand, substantially as and for the purposes described.

ln testimony whereof I sign this specification in the presence of two witnesses.

ALONZO B. HAVLEY. Witnesses:

N. S. WRIGHT,

M. B. ODoGHnRTY. 

